Trolley-pole head



0. 'L -BELL'. yTROLLEY Pou HEAD.

APPLICATION lFILED AUG9.- 1919- RENEW-D MAR. 30, i921. 1,378,991.

ATTORNEY.

ino

masfirarsNT OFFICE,

GELRGE TRFERD BELLI 0F BOSTGN, MIASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, T d, E. C. MQCRTHY, QF BSTON, MASSACHUSETTS.

Specification of Letters raient.' Patented llLay 24, 1921.

,application :filed August 9, i919, Serial Mo. 316,377. Renewed March 30, 1921. Serial No. 457,027.

Y ,iat l, Gnonenrl. BELL, a citizen tue United States, residing at Boston., in the county of Suitiollr and tate of lvlassachusetts, have invented new and useful Improvements in Trolley-Pole Heads, of which the following is specification.

The object oi my present sole invention .is the. provision ot a trolley pole head con structed with a View to facilitating the replacing of the contact Wheel in engagement with a trolley Wire, in the event of the conu tact Wheel being casually disengaged from said Wire.

'lo the attainment of the foregoing, the invention consists in the improvement hereinafter described and definitely claimed.

In the accompanying drawings, hereby made a part hereof:

Figure l is a side elevation illustrative et my improvement.

Fig. 2 is a View, partly in section and partly in elevation, talren at right angles to Fig. l.

Similar numerals of reference designate corresponding parts in both views orP the drawings, y At its upper end the trolley pole l is pro vided with a bifurcated head 2, and in the bifurcation of' the head is mounted to revolve the circumferentially groovedcontact Wheel 3 for engaging the trolley Wire, indicated by il.

ln furtherance of my invention, the head 2 is equippedivith lateraljournals 5, and

fulcrumed on saidjournals 5 are the side portions 6 of a guard; the said guard being yieldingly maintained in the relative posi? tion :illustrated through the medium of side springs :in addition to the side portions 6, which re preferably of obtuse angle formation, .I l, the guard comprises a lower bight o 1Cor the Connection. of the usual manipulatN j les inwardly-reaching end rms 10 separated by a gap 1l vlfor 'the arrangement oit the contact 'Wheel fi in engagement with the 'trolley Wire d, and anti-friction rollers l2, preferably oi' truste-conical shape, which are carried a"y the inner sides of the side portion G adja zent to the upper ends thereof and have their inner ends arranged in close proximity to tl le sides oit the peripheral portion. of the con 3act Wheel 3, Fig. 2.

As is Well kn iwn, much annoyance is occasioned by contact Wheels ol trolleys jumping out of engagement with trolley Wires, and much diliiculty is experienced and time lost in the replacing of trolley Wheels in proper Working engagement relatively to trolley Wires.

4 By virtue of my improvement, when the Contact Wheel 3 becomes disengaged from the trolley Wire, the chances are Very much in favor of one of the inwardly directed arms 10 engaging the trolley Wire, so that one of the rollers 12 Will'be guided into engagement With the Wire, and Will facilitate the subsequent engagement of the contact Wheel 3 with the Wire, and thisvvithout subjecting the guard to undue Wear against the trolley Wire.

When the guard is entirely clear of the trolley Wire, and it is desired to place the Wheels 3 in Working contact against the Wire, it is simply necessary as a condition precedent to the operation before described, to soymanipulate the trolley pole that' the trolley Wire'vvill pass through the ga 11 to a position Within the upper arms of t e guard.

liavin1 described my invention, what l claim an desire to secure by LettersPatent, 1s:

1. The combination with a. trolley pole of a contact Wheel carried thereby, guard arms iizied against lateral movement at opposite sides of said Wheel, resilient means maintaining said arms in -opstanding position, id aires having xed inwardly-extending upper end portions disposed vabove said e said end portions being normally out of contact with the trolley Wire and separated by a gap Asuciently vWide to permit said Wire to pass therethrough, and inn Wardly-extending lateral portionsarranged in close proximity to said Wheel at the `periphery thereof, means tor pivotally connecting said arms at their lower ends to opposite sides of the trolley pole and a member joining said arms together, said member being arranged for the connection et a manipulatingcable.

2.- "llie combination with a trolley pole having a harp at its outer end of a contact .Wheel rotatably mounted in said harp, guard arms lined against lateral movement and 4 pivotally connected toA said harp, resilient means for maintaining said `arms in upstanding position, said arms having iixed inwardly-extending end portions disposed above said Wheel, said end portions being normally out of Contact with the trolley Wire and separated by a gap suiciently Wide to permit said Wire to pass therethrough, and inwardly-extending lateral portions arranged in close proximity to the opposite sides of said Wheels at the periphery thereof, and means whereby said arms may be .ro

tated manually about their connections with said harp and thereby bring said inwardly l0 extending upper end portions of said arms below the periphery of the upper part of said Contact Wheel.

In testimony whereof I aHiX my signature.

GEORGE TRAFFORD BElflZ. 

